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Discussion Starter #1
Bit of a weird one here folks - got two garages stumped.
The zaf has been using load of oil for over 6 months now, no leaks and dose not appear to be burning it - no smoke at all.
When i was checking the levels the other night i noticed something odd. When i went to refit the oil filler cap, it was kind of sucked back on like avacuum, I lifted it off several times and there is a vacuum being created. The revs also drop when the cap is on but go back up when the cap is off.
anyone have any ideas?
 
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